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    Subject[PATCH 5.5 091/367] PCI: keystone: Fix outbound region mapping
    Date
    From: Yurii Monakov <monakov.y@gmail.com>

    commit 2d0c3fbe43fa0e6fcb7a6c755c5f4cd702c0d2f4 upstream.

    The Keystone outbound Address Translation Unit (ATU) maps PCI MMIO space in
    8 MB windows. When programming the ATU windows, we previously incremented
    the starting address by 8, not 8 MB, so all the windows were mapped to the
    first 8 MB. Therefore, only 8 MB of MMIO space was accessible.

    Update the loop so it increments the starting address by 8 MB, not 8, so
    more MMIO space is accessible.

    Fixes: e75043ad9792 ("PCI: keystone: Cleanup outbound window configuration")
    Link: https://lore.kernel.org/r/20191004154811.GA31397@monakov-y.office.kontur-niirs.ru
    Signed-off-by: Yurii Monakov <monakov.y@gmail.com>
    [bhelgaas: commit log]
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    Acked-by: Andrew Murray <andrew.murray@arm.com>
    Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
    Cc: stable@vger.kernel.org # v4.20+
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/pci/controller/dwc/pci-keystone.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/pci/controller/dwc/pci-keystone.c
    +++ b/drivers/pci/controller/dwc/pci-keystone.c
    @@ -422,7 +422,7 @@ static void ks_pcie_setup_rc_app_regs(st
    lower_32_bits(start) | OB_ENABLEN);
    ks_pcie_app_writel(ks_pcie, OB_OFFSET_HI(i),
    upper_32_bits(start));
    - start += OB_WIN_SIZE;
    + start += OB_WIN_SIZE * SZ_1M;
    }

    val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);

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